[INFO] fetching crate embedded-mqtt 0.1.0...
[INFO] documenting embedded-mqtt-0.1.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate embedded-mqtt 0.1.0 into /workspace/builds/worker-84/source
[INFO] validating manifest of crates.io crate embedded-mqtt 0.1.0 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate embedded-mqtt 0.1.0
[INFO] finished tweaking crates.io crate embedded-mqtt 0.1.0
[INFO] tweaked toml for crates.io crate embedded-mqtt 0.1.0 written to /workspace/builds/worker-84/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a7e0c1d9e58465f6c92888d0715a5d65d68223082c2dc39a0b9a2236c027421
[INFO] running `Command { std: "docker" "start" "-a" "8a7e0c1d9e58465f6c92888d0715a5d65d68223082c2dc39a0b9a2236c027421", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a7e0c1d9e58465f6c92888d0715a5d65d68223082c2dc39a0b9a2236c027421", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a7e0c1d9e58465f6c92888d0715a5d65d68223082c2dc39a0b9a2236c027421", kill_on_drop: false }`
[INFO] [stdout] 8a7e0c1d9e58465f6c92888d0715a5d65d68223082c2dc39a0b9a2236c027421
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a9e9d34c00688d12d423a5a344a2822e80397e2f63067af525a905c7be12c0c
[INFO] running `Command { std: "docker" "start" "-a" "9a9e9d34c00688d12d423a5a344a2822e80397e2f63067af525a905c7be12c0c", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]  Documenting embedded-mqtt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/variable_header/connect.rs:187:13
[INFO] [stdout]     |
[INFO] [stdout] 187 |             (offset + o)
[INFO] [stdout]     |             ^          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 187 -             (offset + o)
[INFO] [stdout] 187 +             offset + o
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/variable_header/connect.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |             (offset + o)
[INFO] [stdout]     |             ^          ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 191 -             (offset + o)
[INFO] [stdout] 191 +             offset + o
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/variable_header/connect.rs:195:13
[INFO] [stdout]     |
[INFO] [stdout] 195 |             (offset + o)
[INFO] [stdout]     |             ^          ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 195 -             (offset + o)
[INFO] [stdout] 195 +             offset + o
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/variable_header/connect.rs:199:13
[INFO] [stdout]     |
[INFO] [stdout] 199 |             (offset + o)
[INFO] [stdout]     |             ^          ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 199 -             (offset + o)
[INFO] [stdout] 199 +             offset + o
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "9a9e9d34c00688d12d423a5a344a2822e80397e2f63067af525a905c7be12c0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a9e9d34c00688d12d423a5a344a2822e80397e2f63067af525a905c7be12c0c", kill_on_drop: false }`
[INFO] [stdout] 9a9e9d34c00688d12d423a5a344a2822e80397e2f63067af525a905c7be12c0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 6688ce9b5944a726d8dd3f800cba37c9ffa5cad983b76bb77fb836b9d5e6ef9e
[INFO] running `Command { std: "docker" "start" "-a" "6688ce9b5944a726d8dd3f800cba37c9ffa5cad983b76bb77fb836b9d5e6ef9e", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]  Documenting embedded-mqtt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/variable_header/connect.rs:187:13
[INFO] [stdout]     |
[INFO] [stdout] 187 |             (offset + o)
[INFO] [stdout]     |             ^          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 187 -             (offset + o)
[INFO] [stdout] 187 +             offset + o
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/variable_header/connect.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |             (offset + o)
[INFO] [stdout]     |             ^          ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 191 -             (offset + o)
[INFO] [stdout] 191 +             offset + o
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/variable_header/connect.rs:195:13
[INFO] [stdout]     |
[INFO] [stdout] 195 |             (offset + o)
[INFO] [stdout]     |             ^          ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 195 -             (offset + o)
[INFO] [stdout] 195 +             offset + o
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/variable_header/connect.rs:199:13
[INFO] [stdout]     |
[INFO] [stdout] 199 |             (offset + o)
[INFO] [stdout]     |             ^          ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 199 -             (offset + o)
[INFO] [stdout] 199 +             offset + o
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "6688ce9b5944a726d8dd3f800cba37c9ffa5cad983b76bb77fb836b9d5e6ef9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6688ce9b5944a726d8dd3f800cba37c9ffa5cad983b76bb77fb836b9d5e6ef9e", kill_on_drop: false }`
[INFO] [stdout] 6688ce9b5944a726d8dd3f800cba37c9ffa5cad983b76bb77fb836b9d5e6ef9e